19-11033783-C-G

Variant names:

• chr19-11033783-C-G
• NM_001387283.1:c.3791C>G

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2 PP2 BP4_Moderate

The NM_003072.5(SMARCA4):​c.3791C>G​(p.Thr1264Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T1264M) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: SMARCA4 NM_003072.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.76

Genes affected

SMARCA4 (HGNC:11100): (SWI/SNF related, matrix associated, actin dependent regulator of chromatin, subfamily a, member 4) The protein encoded by this gene is a member of the SWI/SNF family of proteins and is similar to the brahma protein of Drosophila. Members of this family have helicase and ATPase activities and are thought to regulate transcription of certain genes by altering the chromatin structure around those genes. The encoded protein is part of the large ATP-dependent chromatin remodeling complex SNF/SWI, which is required for transcriptional activation of genes normally repressed by chromatin. In addition, this protein can bind BRCA1, as well as regulate the expression of the tumorigenic protein CD44. Mutations in this gene cause rhabdoid tumor predisposition syndrome type 2. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2012]

ENSG00000278643 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the SMARCA4 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 59 curated pathogenic missense variants (we use a threshold of 10). The gene has 56 curated benign missense variants. Gene score misZ: 6.8459 (above the threshold of 3.09). Trascript score misZ: 8.7957 (above the threshold of 3.09). GenCC associations: The gene is linked to uterine corpus sarcoma, Coffin-Siris syndrome 1, intellectual disability, autosomal dominant 16, rhabdoid tumor predisposition syndrome 2, familial rhabdoid tumor, hereditary nonpolyposis colon cancer, Coffin-Siris syndrome.
• BP4: Computational evidence support a benign effect (MetaRNN=0.2152032).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SMARCA4	NM_001387283.1	c.3791C>G	p.Thr1264Arg	missense_variant	Exon 27 of 36	ENST00000646693.2	NP_001374212.1
SMARCA4	NM_003072.5	c.3791C>G	p.Thr1264Arg	missense_variant	Exon 27 of 35	ENST00000344626.10	NP_003063.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SMARCA4	ENST00000646693.2	c.3791C>G	p.Thr1264Arg	missense_variant	Exon 27 of 36		NM_001387283.1	ENSP00000495368.1
SMARCA4	ENST00000344626.10	c.3791C>G	p.Thr1264Arg	missense_variant	Exon 27 of 35	1	NM_003072.5	ENSP00000343896.4
SMARCA4	ENST00000643995.1	c.3203C>G	p.Thr1068Arg	missense_variant	Exon 24 of 32			ENSP00000496004.1
SMARCA4	ENST00000644963.1	c.2435C>G	p.Thr812Arg	missense_variant	Exon 20 of 28			ENSP00000495599.1
SMARCA4	ENST00000642350.1	c.2276C>G	p.Thr759Arg	missense_variant	Exon 19 of 27			ENSP00000495355.1
SMARCA4	ENST00000643857.1	c.2144C>G	p.Thr715Arg	missense_variant	Exon 18 of 25			ENSP00000494159.1
SMARCA4	ENST00000643549.1	c.3774+266C>G		intron_variant	Intron 26 of 34			ENSP00000493975.1
SMARCA4	ENST00000541122.6	c.3774+266C>G		intron_variant	Intron 27 of 34	5		ENSP00000445036.2
SMARCA4	ENST00000643296.1	c.3774+266C>G		intron_variant	Intron 26 of 33			ENSP00000496635.1
SMARCA4	ENST00000644737.1	c.3774+266C>G		intron_variant	Intron 26 of 33			ENSP00000495548.1
SMARCA4	ENST00000589677.5	c.3774+266C>G		intron_variant	Intron 27 of 34	5		ENSP00000464778.1
SMARCA4	ENST00000644065.1	c.2499+266C>G		intron_variant	Intron 19 of 26			ENSP00000493615.1
SMARCA4	ENST00000538456.4	c.30+266C>G		intron_variant	Intron 1 of 7	3		ENSP00000495197.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 0

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Uncertain	0.061	T
BayesDel_noAF	Benign	-0.15
CADD	Uncertain	25
DANN	Uncertain	0.98
DEOGEN2	Benign	0.35	T;T;T;T;.;.
Eigen	Benign	0.030
Eigen_PC	Benign	0.20
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Benign	0.81	.;.;T;T;T;T
M_CAP	Benign	0.061	D
MetaRNN	Benign	0.22	T;T;T;T;T;T
MetaSVM	Uncertain	-0.11	T
MutationAssessor	Benign	0.55	N;.;N;.;.;.
PrimateAI	Uncertain	0.71	T
PROVEAN	Benign	-0.57	N;.;N;.;.;.
REVEL	Uncertain	0.34
Sift	Benign	0.070	T;.;T;.;.;.
Sift4G	Benign	0.19	T;.;T;T;.;.
Polyphen		0.25	B;B;B;B;.;.
Vest4		0.33
MutPred		0.23		Loss of glycosylation at T1264 (P = 0.0328);Loss of glycosylation at T1264 (P = 0.0328);Loss of glycosylation at T1264 (P = 0.0328);Loss of glycosylation at T1264 (P = 0.0328);.;.;
MVP		0.75
MPC		1.7
ClinPred		0.41	T
GERP RS		5.2
Varity_R		0.20
gMVP		0.71

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-11144459;